// ==UserScript==
// @name         哔哩哔哩广告全面屏蔽
// @namespace    https://github.com/yourname/bilibili-ad-blocker-enhanced
// @version      1.3
// @description  屏蔽左侧横幅广告、推荐流广告视频、小型广告卡片（.video-card-ad-small），完全避开评论区
// @author       Assistant
// @match        *://*.bilibili.com/*
// @icon         https://www.bilibili.com/favicon.ico
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    // ---------- 广告选择器 ----------
    // 1. 左侧横幅广告
    const LEFT_BANNER_AD_SELECTOR = 'div.left-container div.ad-report.strip-ad.left-banner, ' +
                                    '.bili-header__left-area .ad-report.strip-ad.left-banner';
    
    // 2. 小型广告卡片（如右侧、底部的小广告）
    const SMALL_AD_CARD_SELECTOR = '.video-card-ad-small';
    
    // 3. 推荐流容器（用于屏蔽其中的广告视频卡片）
    const FEED_CONTAINER_SELECTOR = '.bili-feed4, .feed-list, .bili-video-card-list, ' +
                                    '.recommend-container, .video-page-special';

    // 评论区根容器（脚本不会处理这些容器内的任何元素）
    const COMMENT_ROOT_SELECTOR = '#comment-area, .comment-list-holder, .reply-list, ' +
                                  '.comment-container, .comment-list, .bili-comment';

    const HIDE_MARKER = 'data-ad-hidden';

    // ---------- 工具函数：判断元素是否在评论区内部 ----------
    function isInsideCommentArea(element) {
        if (!element) return false;
        let node = element;
        while (node && node !== document.body) {
            if (node.nodeType === Node.ELEMENT_NODE && node.matches && node.matches(COMMENT_ROOT_SELECTOR)) {
                return true;
            }
            node = node.parentElement;
        }
        return false;
    }

    // ---------- 1. 屏蔽左侧横幅广告 ----------
    function removeLeftBannerAd() {
        const ads = document.querySelectorAll(LEFT_BANNER_AD_SELECTOR);
        ads.forEach(ad => {
            if (!isInsideCommentArea(ad)) {
                ad.remove();
                console.log('[广告屏蔽] 已移除左侧横幅广告', ad);
            }
        });
    }

    // ---------- 2. 屏蔽小型广告卡片（.video-card-ad-small） ----------
    function hideSmallAdCards() {
        const smallCards = document.querySelectorAll(SMALL_AD_CARD_SELECTOR);
        smallCards.forEach(card => {
            if (!isInsideCommentArea(card) && card.getAttribute(HIDE_MARKER) !== 'true') {
                card.style.display = 'none';
                card.setAttribute(HIDE_MARKER, 'true');
                console.log('[广告屏蔽] 已隐藏小型广告卡片', card);
            }
        });
    }

    // ---------- 3. 屏蔽推荐流中的广告视频卡片（带“广告”文字） ----------
    function isAdVideoCard(card) {
        const adLabel = card.querySelector('.bili-video-card__stats--text');
        if (adLabel && /广告|推广|AD/i.test(adLabel.textContent.trim())) {
            return true;
        }
        return false;
    }

    function hideAdVideoCard(card) {
        if (card.getAttribute(HIDE_MARKER) === 'true') return;
        card.style.display = 'none';
        card.setAttribute(HIDE_MARKER, 'true');
        console.log('[广告屏蔽] 已隐藏广告视频卡片', card);
    }

    function hideVideoAdsInRecommended() {
        const containers = document.querySelectorAll(FEED_CONTAINER_SELECTOR);
        containers.forEach(container => {
            if (isInsideCommentArea(container)) return;
            const cards = container.querySelectorAll('.bili-video-card');
            cards.forEach(card => {
                if (!isInsideCommentArea(card) && isAdVideoCard(card)) {
                    hideAdVideoCard(card);
                }
            });
        });
    }

    // ---------- 统一清理入口 ----------
    function fullClean() {
        removeLeftBannerAd();
        hideSmallAdCards();
        hideVideoAdsInRecommended();
    }

    // ---------- 处理动态新增节点 ----------
    function processNewNode(node) {
        if (node.nodeType !== Node.ELEMENT_NODE) return;
        if (isInsideCommentArea(node)) return;

        // 检查左侧广告
        if (node.matches && node.matches(LEFT_BANNER_AD_SELECTOR)) {
            node.remove();
            console.log('[广告屏蔽] 动态移除左侧广告', node);
        } else {
            const bannerAds = node.querySelectorAll(LEFT_BANNER_AD_SELECTOR);
            bannerAds.forEach(ad => {
                if (!isInsideCommentArea(ad)) {
                    ad.remove();
                    console.log('[广告屏蔽] 动态移除子节点左侧广告', ad);
                }
            });
        }

        // 检查小型广告卡片
        if (node.matches && node.matches(SMALL_AD_CARD_SELECTOR)) {
            if (!isInsideCommentArea(node) && node.getAttribute(HIDE_MARKER) !== 'true') {
                node.style.display = 'none';
                node.setAttribute(HIDE_MARKER, 'true');
                console.log('[广告屏蔽] 动态隐藏小型广告卡片', node);
            }
        } else {
            const smallCards = node.querySelectorAll(SMALL_AD_CARD_SELECTOR);
            smallCards.forEach(card => {
                if (!isInsideCommentArea(card) && card.getAttribute(HIDE_MARKER) !== 'true') {
                    card.style.display = 'none';
                    card.setAttribute(HIDE_MARKER, 'true');
                    console.log('[广告屏蔽] 动态隐藏子节点小型广告卡片', card);
                }
            });
        }

        // 检查视频广告卡片（仅当新增节点是推荐流容器或其子节点包含推荐流容器）
        let needScanVideo = false;
        if (node.matches && node.matches(FEED_CONTAINER_SELECTOR)) {
            needScanVideo = true;
        } else if (node.querySelector && node.querySelector(FEED_CONTAINER_SELECTOR)) {
            needScanVideo = true;
        }
        if (needScanVideo) {
            setTimeout(() => hideVideoAdsInRecommended(), 50);
        }
    }

    // ---------- MutationObserver 监听页面变化 ----------
    const observer = new MutationObserver(mutations => {
        let hasAddedNodes = false;
        for (const mutation of mutations) {
            if (mutation.type === 'childList' && mutation.addedNodes.length) {
                mutation.addedNodes.forEach(node => processNewNode(node));
                hasAddedNodes = true;
            }
        }
        if (hasAddedNodes) {
            // 二次清理，确保遗漏的广告被处理
            setTimeout(() => {
                removeLeftBannerAd();
                hideSmallAdCards();
                hideVideoAdsInRecommended();
            }, 100);
        }
    });

    if (document.body) {
        observer.observe(document.body, { childList: true, subtree: true });
    } else {
        window.addEventListener('DOMContentLoaded', () => {
            observer.observe(document.body, { childList: true, subtree: true });
        });
    }

    // ---------- SPA 路由变化辅助 ----------
    let lastUrl = location.href;
    const urlObserver = new MutationObserver(() => {
        if (location.href !== lastUrl) {
            lastUrl = location.href;
            setTimeout(fullClean, 200);
        }
    });
    urlObserver.observe(document, { subtree: true, childList: true });

    // 启动清理
    fullClean();

    console.log('[哔哩哔哩广告屏蔽] 增强版已启动 | 左侧横幅 + 小型广告卡片 + 推荐流广告视频均已屏蔽，评论区完全不受影响');
})();